/*
 * Copyright (C) 2017-2019 Dremio Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.dremio.exec.planner.sql;

import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.rel.type.RelDataTypeFactory;
import org.apache.calcite.sql.SqlCall;
import org.apache.calcite.sql.SqlOperatorBinding;
import org.apache.calcite.sql.type.SqlTypeName;
import org.apache.calcite.sql.validate.SqlValidator;
import org.apache.calcite.sql.validate.SqlValidatorScope;

import com.dremio.exec.planner.sql.DynamicReturnType;

public class HiveUDFOperatorWithoutInference extends HiveUDFOperator {
  public HiveUDFOperatorWithoutInference(String name) {
    super(name, DynamicReturnType.INSTANCE);
  }

  @Override
  public RelDataType deriveType(SqlValidator validator, SqlValidatorScope scope, SqlCall call) {
    RelDataTypeFactory factory = validator.getTypeFactory();
    return factory.createTypeWithNullability(factory.createSqlType(SqlTypeName.ANY), true);
  }

  @Override
  public RelDataType inferReturnType(SqlOperatorBinding opBinding) {
    RelDataTypeFactory factory = opBinding.getTypeFactory();
    return factory.createTypeWithNullability(factory.createSqlType(SqlTypeName.ANY), true);
  }
}
